Whenever there is ecosystem change, there is a change in plant and animal populations with certain species unable to adapt at risk for survival. Whether it is air pollution, as shown in this excerpt, or some other form, science is often relied on to provide answers that may not always be possible in an ever-changing ecosystem.

All across eastern North America, trees are dying and soils are being poisoned by acid rain. This compelling film, hosted by prominent scientist and broadcaster David Suzuki, investigates the frightening phenomenon of forest dieback, and proposes some solutions.